Swivel



May 10,1927.v 1,627,873

' R. TAYLOR .SWIVEL Filed Sept. 2. 1924 ,7/3" Jim/way lll ROY TAYLOR, or Los Es vPaTenir orifice.

ANGELES, cntrronmanssrdnror'ons-HALF To DAVID CANT, or LosANGELEs; oALrroRNrA.

` SWIVEL.

Application tiled September 2, 1924. Ser'at-No. 735,394.

This invention relates to a swivel for' use in a well drilling rig or 4the like, and it is an object oiu the invention to provide an eiiective, improved device ot this character.

tiwivels are used in drilling wells withthe rotary method to support the drill stem or kelly in the derriek so that it is tree torotate and to make connection with the kelly so thatl fluid can be pumped into it. The swivel connects the upper end of the kelly with a travelling block supported from the crown block at the top ot the derrickl During operation the kelly and swivel are sub ject to considerable jarring and whipping action which cause rapid wearing oi' the swivel and often failure ot the swivel;

t is an object ot this invention to `rprovide a swivel which will operate etlect-ively and without excess wear.

Another objectot this invention is to provide a swivel which is universally movable in the bail or carrier. 4 l

A further object or" this invention is to provide a yConstruction applicable to the ordinary torni of swivel to improve its operation and relieve it of wear.-

The various objects and features of my invent-ion will be best and more fully .understood from the following detailed description of a typical preferred form 'of the in-' vention, throughout which description reference is had to the accompanying drawings in which Fig. 1 is a view taken from one side oill the swivel with certain parts broken raway to show in section.

Fig. 2 is a detailed plan section taken substantially as indicated by line 2 2 on Fig. 1.

Fig. 3 is a. view taken as indicated by line 33 on Fig. 2, the body ot the swivel being shown in elevation and F ig. 4l is a View taken as indicated by line H on Fig. 2.

ln the drawings numeral 10 designates the goose-neck of the swivel, numeral 11 the stem ot the swivel and numeral l2 the body of the swivel, which connects the goose-neck and stem. rEhe goose-neck 10 is at the upper end ot the body 12 and operates as a fluid conductor for connecting the swivel with allose, or the like, (not shown). The stem is at the lower end of the body 12 and is adapted to be connected with the upper end ot the drill stem, (not shown), by means ot' a suitable coupling. The vbody 12 `carries the stem 1l so that'it is rotatable and so that .it will support the load of the drill stein `and connected parts, such as drill pipe, drilling tools, etc.r` Further, the body 12 forms ak fluid connection between the gooseneck 10and stemll whereby fluid supplied to the goose-neck passes through the body and is discharged through the stem into the kelly. The present invention is not specifically concerned with the details of construction, I'orrnatiom or arrangement oit the parts thus far described nor with the details of the bearings, packing glands' etc., carried in the bo'dy 12 to make the necessary connections between the go'oseneck l0 and stem 1l. In practice the various parts oitthe swivel thus far mentioned may be suoli as are common to devicesof thisgeneral character.

Trunnions 15 extend from the side wall of the body 12 at Vdiametri'cally opposite point-s. The trunnions l5 'may be' formed integrally with the side wall of the body l2 and may be shaped and proportioned substantially' the 'same asthe trunnions provided on the ordinary type of swivel to receive the l supporting bail.

In accordance with this invention ay yoke' preferably in the forni of a ring 20 is applied tothe body 12 to support the body through the trunnions 15. The ring 20 preterably fits around the body with substantial clearance, as illustrated throughout the drawings, and is provided at diametrically opposite ypoints with bearings to receive the trunnions 15. tion of the ring l2 and bearings-in the ring to carry the trunnions 15 may rin practice vary considerably. Itfispreterred that the ring 2O be a` continuous ring tormedwithout joints and that the bearingsbe formed by notching the ring and applying suitable bearing caps 21 to it. In the construction illustrated in the drawings, notches 22 are provided in the ring trom its upper end and the bot-tomsotl the notches are shaped to receive the trunnions 15. The bearing caps 21 are arranged in the notches 22 above the trunnionsto retain the trunnions in place in the ring. Thebearingl caps 2l are held by projections 23 extending from opposite sides of blocks into recesses 2e provided in the side walls of the notches 22. The blocks 21 are adapted to be slid into place from The con-struction and orinathe outside o't the ring over the trunnions and may be retained in position by cap screws 25.

The ring 20 has truiniions 30 projeelinu jtrom its outer side at diametrically opposite points. l`lie airis of the trunnions 30 is zu' right angles 'to the axis ol" the trunnions 'lok and is preferably located in the saine horn zontal plane as the axis of the trunnions lo. 'llhe trunnions lll) may be formed integrally with the ring 2l) and may be shaped and proportioned substantially the same as the trunnions l5. rilhe trnnnions El() are for 'the par pose ot mounting the rin 2() in a supportin 1 bail llsimilar to the bail used ttor the ordi ary swivel. 'llie bale 3? comprises lwo side parts connected together at their upper ends, and lnovided at their lower ends with openings to rotatably carry the trunnions :3o.

ln operation the device provided by this invention is used the saine as the ordinaryy swivel. it is supported by a travelling block through the bail 325, a suitable hose is connected with the goose-neck ll), and the drill stem or kelly, is connected with the stein ll. yhe operation ot' the svvivel is, however, materially different from that t the ordinary swivel. ln the case ot' an ordinary swivel the connection between the body l2 and bails allows for pivotal movement ot the body relative to `the bail in one direction only, so that movement or the body in any other direction causes movement ol` the bail with relation to the travelling` block. lt is obvious that this causes uneven operation oll the swivel and operates to cause Whipping and irregular movement of the entire swivel. With the construction provided by this invention the body l2 is universa ly mounted in the bail, beingperfectly liree to move in any direction and therefore operates' uniformly and Without the Whipping action above referred to. he uniform operation ol the device is not only important in iinproving the operating olf the entire. drillinff apparatus, but also in prolonging the li'lie of the swivel. ln practice the coi'istruction which l have provided may be applied to swivels at the time or' manufacture or may be applied to the usual type of swivel by applying the yoke ring between the boc y of the swivel and the bail or by removing the usual bail and applyingl the yoke ring' and a new bail to lit the yole ring.

lflaving described only a. typical pre-- ilerrcd form ol my inventicm l do not Wish to .inuit myself to the specilie details here inabove ser YForth, but Wish to reserve lo myself any changes or variations vthat may appear to those skilled in the art or Yiall Within the scope of the following claims: llaving,l described my invention, l claim:

l. A swivel device tor rotary drilling outlits, including` a body for rotatably supporting a drill stein and having oill'set trunnions, a ring surrounding the body and receif-xing said trunnions, and a bail lor pivotally suspending the ring.

r. A swivel device for rotary chillingl out lits comprising in combination with the kelly of the drill stem and the suspending bail, of a universal joint structure supported by said bail and in turn swivelly supporting the kelly of the drill stem.

il. A swivel lor rotary drilling 'outli'ts con'iprising in combination `with the kelly of the drill stein, a svvivel body for rotatably supporting the said kelly, trunnions formed on said body, a ringsurrounding the body and receiving said trunnions, other trunnions formed on said ring, and a sus pending` bail pivotally engaging' said last named trunnions.

l. In a rotary drilling apparatus, the combination with the kelly and the suspended sheave block olf the apparatus, of a swivel device for supporting the kelly, and a universal joint connecting said swivel device and sheave block.

In a rotary drilling apparatus, the com bination with the rotatably driven kelly and the slieave block suspended from the top oli the derricl, of a swivel device including n swivel for rotatably receiving;` and suspending` the kelly of the drill stem, a universal hanger ring engaging with said svvivcl and a bail. connected to said hanger ring and adapted to be supported by the sheave bloelc.

In Witness that I claim the Ylforegoi u l. have hereunto subscribed my naine this linfa day of Aug. 1924.

ROY TAYLOR. 

